2D trapezoidal rule

Versione 1.8.0.0 (2,26 KB) da Mohammed Sadeq Al-Rawi
Calculates a double integral using trapezoidal rule.
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Aggiornato 7 mar 2013

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This is a very simple program that makes use of Matlab's trapz (single integral). It has the benefit that it can be used to integrate over vectors x, y, and the function f(x,y), rather than on lower and upper limits. It can also be used with nonuniform spacing at the input vectors.

Example of nonuniform spacing:
x=[0,.1,.3,.45,.6,.8,.99,1]
y=[0,.05,.1,.2,.7,.57,.92,1]

Cita come

Mohammed Sadeq Al-Rawi (2024). 2D trapezoidal rule (https://www.mathworks.com/matlabcentral/fileexchange/40631-2d-trapezoidal-rule), MATLAB Central File Exchange. Recuperato .

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Versione Pubblicato Note della release
1.8.0.0

Considering the suggestion
% Richard Crozier http://www.mathworks.com/matlabcentral/fileexchange/authors/34660

Thanks Richard :)
1.7.0.0

A simple correction to the example.
1.6.0.0

Modification so that the input matrix is MxN rather than NxN.
1.5.0.0

Adding one extra tag, keyword.
1.4.0.0

Adding one line to the code.
1.3.0.0

Description change.
1.2.0.0

Doing corrections to the comments.
1.1.0.0

Correcting the description.

1.0.0.0